Describe how the width of a 95% confidence interval for a mean changes as the standard deviation (s) of a sample increases, assuming sample size remains the same. Choose the correct answer below. O A. As the variability of a sample increases, the width of a 95% confidence interval increases, assuming that sample size remains the same. O B. As the variability of a sample increases, the width of a 95% confidence interval remains the same, assuming that sample size remains the same. O C. As the variability of a sample increases, the width of a 95% confidence interval decreases, assuming that sample size remains the same